Only include used requests in cquery starlark

Test: go test soong tests
Test: generate & sync bp2build, mixed build libc
Change-Id: I1fbf854cf31f40b7721788956d0f08da3bda2cba

android/bazel_handler.go

@@ -474,7 +474,7 @@ def %s(target):
     return id_string + ">>" + %s(target)
 `
 
-	for _, requestType := range cquery.RequestTypes {
+	for requestType, _ := range requestTypeToCqueryIdEntries {
 		labelMapName := requestType.Name() + "_Labels"
 		functionName := requestType.Name() + "_Fn"
 		labelRegistrationMapSection += fmt.Sprintf(mapDeclarationFormatString,